34 LAND AND FRESHWATER 
GuirsstUna (RISHETIA) SUBACULINA, 0. sp., Coll. G.-A. No. 3555 
B.M. (Plate CLIX. fig. 9.) 
Locality. Landomodo Trigonometrical Station. Type. N. Khasi 
Hills (7 specimens); The Maotherichan Ridge (No. 3556) (4 speci- 
mens); South Jaintia (1 specimen). Tura,Garo Hills (iS. W. Kemp). 
Shell elongately turreted; sculpture irregular, well-developed 
rather coarse striation, but varying much in different shells; 
colour ochraceous; spire elongate, sides flatly convex, apex blunt; 
suture rather shallow; whorls 12, sides not quite flat; aperture 
narrowly ovate; columella curving subobliquely, ee truncate. 
Size: maj. diam. 7°25; length 31-0 mm. 
This approaches the ‘Sikhim G. baculina Bs., but is rather 
broader than that species, the whorls near apex increasing more 
rapidly. It is not so smooth and shiny, 
No. 77 of Nevill’s ‘ Hand-list,’ p. 170, Gless. baculina—3 Khasi 
Hills, presented by me, are subaculina; they have been sent home 
(1916) by Dr. N. Annandale and compared by me. 
Giessua (RisHEriA) suBacurina, G.-A., No. 1580 B.M. (Plate 
CLIX. fig. 4.) 
Conch. Ind. pl. xvii. fig 5 as G. theobaldi, Hanley MSS. 
Locality. Teria Ghat, foot of Khasi Hills (Godwin-Austen). 
Shell elongately turreted, slender; sculpture: striation of growth 
strongest below the suture and most regular on the 5th and 6th 
whorls ; colour umber-brown or dull ochraceous; spire elongate, 
apex fine ; suture shallow; whorls 12, sides flat, proportion spire 
to last whorl 100: 24-4; aperture narrowly ovate; peristome 
outer lip thin; columellar margin regularly convex, not solid, 
Size: maj. diam. 9°5; alt. axis 34:75 mm. 
There are two specimens in my collection now in the Natural 
History Museum (No. 1580 B.M.); their history is of interest and 
important with regard to the exact habitat of G. theobaldi, 
Hanley. 
Considerable confusion surrounds this species, owing to the 
authors of the ‘Conchologia Indica’ working apart when it was 
passing through the press—one (Mr. Hanley) in England, the other 
(Mr. Theobald) in India, dealing with shells from two very different 
localities. Hanley first describes the shell very briefly of Achatina 
theobaldi, Conch. Ind. p. 9, 1870; in explanation of pl. xvii. fig. 5, 
from ‘‘ Near the Salwen,” he says, “‘ Differs from A. cassiaca, of which 
it has been considered a variety, by its smoothness, more convex 
whorls, &c.” The shell was therefore a Bacillum, and we can 
presume the species recorded by Theobald from the Shan States was 
also a Bacillum, vide a paper in the ‘Journal of the Asiatic Society 
of Bengal,’ 1870 (not 1871 as given by Gude), vol. xxxix. p. 395. 
On land-shells from the Shan States and Pegu as Achatina ( Glessula) 
